Patent US2922868A successfully refreshed from Google Patents.
US2922868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas shielded internally cooled electrode welding torch
Assignee: Union Carbide Corp
•
Filing: 1957-03-05
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Granted: 1960-01-26
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Expires: 1977-03-05
Abstract
No abstract record available.
Inventors
- 👤 Hackman Robert Linford
- 👤 Glenn W Oyler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:33
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/24; B23K9/28; B23K9/285
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1687081A
Cited
US2052796A
Cited
US2422962A
Cited
US2587331A
Cited
US2686860A
Cited
GB716565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-25 | 1963-07-27 | 1964-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-25 | 1967-07-27 | 1968-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-25 | 1971-07-27 | 1972-01-26 | $7700.00 | Window Closed / Lapsed |